DECLASSIFIEDUSAF PROJECT BLUE BOOK · NARA T-1206

UNITED STATES AIR FORCE

PROJECT BLUE BOOK

UNIDENTIFIED FLYING OBJECT CASE FILES · 1947 – 1969

CASE REFERENCE6793210

DATE OF SIGHTINGApril 1949

REPORTED LOCATIONDenver Colorado

FRAMES25

→ Original microfilm scan (PDF) → Return to index

Machine transcription · mean legibility 79.7/100 · engines: paddle-gpu-200dpi, tesseract-200dpi

Transcribed Frames

FRAME 001 / 025paddle-gpu-200dpi

1
9 Incidant 282
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ALTITUDE15,000
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.

FRAME 002 / 025paddle-gpu-200dpi

GB 000.9 11 April 1949
SUBJECT: Unconventional Dise"
TO: Commanding General
Air Materiel Connand
Wright-Patterson Air Force Base
Dayton, Ohio
ATTN: MCIAXO-3
AXS
.
1. In reforence to TT LUGB 2lO2 from this Headquarters, 7 April
1949, relative unconventional airoraft whioh was identified
this Headquarters. Case inquiry olosed at this base. This report is
- in compliance with Air Intelligence Raquirements Memorandum No. 4, DAF,
15 February 1949, Subjeot: Unconventional Airoraft. 15 February ubject: Unoonventiona. Airoraft.
.
Wen. a Wiltheg Wan. a.Weltherg
1 Inol: TM. A. WIITBERGER TM. A. WIITBERGER
Report No. LAFB O0o.9-2 Report No. LAFB O00.9-2 Major, USAF
(single) Wing Intelligence Offiger Wing Intelligence Officer
-
.
+
ALS:
EARS:
. DOWNGRADED AT
DECLASSIFIFH DO.
al 1
UNCLASSIFIED
282.
- 4 "
TAEHIENIA
4-18
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FRAME 004 / 025paddle-gpu-200dpi

6 April 1949 is: Sky conditio mile mors,
winds aloft 15 thousand feet West Northwest, 25 kmots becoming North
Northwest 40 knots at 25 thousand feet. (See attached eather
Officer's Report).
3. Local flight schedules of commeraial
in ricinitv et thatime.
5, 5, & 7 Negative.
8, Sae OSI Report.
9 & 10: Negative.
.
10

FRAME 005 / 025paddle-gpu-200dpi

S
OFTICS

FRAME 006 / 025paddle-gpu-200dpi

noted in s No form or
b. n at
No other aot
2 Rocky Maimtn toee
transmitt attached
to 1850M f when balloon burst. Set
with no evidence of interference. |
Copy of upper wind reoort
Report.

FRAME 007 / 025POOR LEGIBILITY — PENDING RE-EXAMINATION

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FRAME 008 / 025paddle-gpu-200dpi

5. Observable celsstial Lowry Air Base Weather Officer
reveals no
prominent celestial phe nomsna.
5. Distance of object from Estimatec 15,000
to 25,000 feet.
to be approximately 4 feet in diameter when released on the ground, about
6 feet in diameter at 20,Ooo feet, and 8 feet in diameter at 30,000 feet,
at which al titude it broks. ot be much
beyond 20,000 feet.
9. Direction of flight: an rection gaining
altitude with je 03.
10, 11, & 12: Hegative.
15. Lights: A small ght burning continuously. See Item 8.
1
L4. Thru 19: Nagati

FRAME 009 / 025paddle-gpu-200dpi

a
-
2

FRAME 010 / 025paddle-gpu-200dpi

might be a flying diso, observation being made f
Field. Ee collected several wit nesses to obsart Object was reported
at altitude of 15,000 to 25.000 feet, travelling eastward gaining altituds,
finally fading OSl investigated a and other related
matters.
2. Wing Intell agencies that
this Base's ground sat nuously for ho ur period

FRAME 011 / 025paddle-gpu-200dpi

conducted from l809ll to 1850M when balloon burst.
Set turned off at l8s5l. Set operated on 403 m9ga-
oyoles with no evidense of interference. Copy of
WIN) ettached.
(3) Radar observations with APO were not. made
time on 6 April l949.
DOWNGRADED AT S YFAR THPVALSI
DECLASSIFIED AFTIR  VLKKS.
DOD DIR G200.10
ESTRETE
18

FRAME 012 / 025paddle-gpu-200dpi

mationod eby jeot.
On 8 April 194a at 2000 houro, brat
the writar to the U. 3. Jeather Stat
enother veether belioon, with llght, relosand. Wah thon dafiuitaly
idomtified the wea vious nigate
T
DISTRIBUTION ACTION COPY FORWARDED TO FILE STAMP o
1 Invoatin
R, GSI 2 gatlons
Orfisg of the Inapeetor
30 16 1 Iasral, J347 7-3712-17
TLa A Eashington B, D. C,
APPROVED
F
XJor, JA7
DISTZICT COMMANDER
AFCSI FORM 2-1073,AF
23 JULY 1948

FRAME 013 / 025paddle-gpu-200dpi

. Activities Section Buokle, Field,
Colore None.
f. Activities of ther units: None determined.
2. Analysis of weather at 2ooou is:
bility 40 miles or more, winds aloft 15 thousand feet West Northwest,
knots at 25 tho usand feet.
3. Survey of astronomical
prominent celestial phenomena.
1 Incl: LESLIE W. COWAN
As Stated Captain, USAF
- Station Weather Officer
*

FRAME 014 / 025paddle-gpu-200dpi

23015 42911 63224 83229 03246 23236 43243
STAPLETON APRIL 1949
PB 32 070510Z
DEN 03 03010 62921 2823 82922 3018 0301 42513 62515
83115 03328 53236 03235
1 RESTRICION
1
el.l.
.

FRAME 015 / 025paddle-gpu-200dpi

Lowry Air Forc Base
Denver, Colorado
ATTN: Ting
report of
Air Force Base which were in the vicinity of De
hours of 1636 MST and
6 April 1949 was obtained
Airport:
1836 NST 2019 LIST Western 110
CAA - 207 United 617
Navion 1OK Continental 63 973
CAA 207
Continental 622 2026 LST Continental 40
- United 108
1841 MST Monarch 134 Monarch 134
Luscombe 88V Continental .62 62
U 108 Piper 75N Challenger 6
Western 52 Braniff 46
Cessna Cessna 097 097 2055 LST 2055 LST Air Force Air Force Jog6 4096
Cessna 097 Vultee 390
United 629 Stinson 570 - 358
Continental 62 Cessna 96V
1911 MST Cessna 17V
Continental 2102 MST Vultee 390
24 Cessna 33N
Western 52 Braniff 46 Beech 359
Cessna 097 Stinson 076 Cessna 33N
Monarch 124 Braniff 54
Continental 27
Continental 69
Piper 75N
Luscombe say
Cessna 097
2015 LST AF 4078 B-29 over DEN 26000 feet
© 2022 UST AF 6355 B-29 over DEN 26000
2043 LST AF 4084 B-29 over DEN 26000
2045 UST AF L094 B-29 over DEN 26000
2057 M51 F 6303 B-29 over DEN 126000
The above aircraft based at either Rapid City or Merced, Califomia.

FRAME 016 / 025paddle-gpu-200dpi

Spangler, H. E. 1st I T-6-5049 Student
Rice, L. lst Lt C-47-6722 Student Supply
Stager, J. A. 1st Lt C-47-6722 Student Supply
Whitmore, F. W. ist Lt C-47-2073 Student Supply
Larkin, J. W. lst Lt C-47-2073 Student Supply
Darnold, V. W. 1st Lt C-47-9956 Student Intell
Pederson, J. A. lst Lt C-47-9956 Student Supply
Linder, M. E. lst Lt T-6-4549 Student Supply
Brulinskdi, S. M. Capt T-6-4549 Student Supply
Diehl, R. A. lst Lt T-6-5056 Student Arm
Elliott, H. Capt T-6-5056 Student Intell
Eads, R. H. Ist Lt C-47-6354 Student Intell
Stulting, E. R. lst It C-47-6355 Student Supply
Thompson, G. E. Capt C-45-7747 Student Arm
Slocum, M. G. lst Lt C-45-7747 Student Arm
Czekaj, W. A. Ist Lt C-47-6223 Student Arm
Forester, Z. T. lst Lt C-47-6223 Student Arm
Marsh, D. H. Lst Lt C-47-6206
Cox, J. H. lst It C-47-6206 Studen Supply
3
T
N
-
.

FRAME 017 / 025paddle-gpu-200dpi

COLLECTED NESH BIECT LTTT
TRAVELLIOG EAS GAENLNG A ITYDE , TADIMG FRON
25000 FT .2y
VIEW TUIS HO GROUND R COMBINATION
CONTINOL Y 12 HOUR PERTOD COMMEN IG 1600 NT ON
TRACKING DASI SET ON QUTOE SUGAR
SEARCH A NO UNUSUAL
UNOUOTE 3000
FORM ENCOUNTERED
OEJECTS ITIONS CLEAR VISTBILITY
VEATHER AT
ORE NW25 KN07S
AO MIL BUREAU STA STAPLETON
t0 N CONSISTING OF TRACKINS
.

FRAME 018 / 025paddle-gpu-200dpi

within a few days, before compl
Form ll2 is subnitted,
2. The unconventional airoraft - "Flying
S. Weather
Station black weather balloon, launched fron Stapleton Airfield, Denver,
Colorado, at 2003 hours M3T, 6 April 1949. Identification made by
observer from observations of an identical balloon, under the same
circumstances, tine and place, on 9 April l949.
.
We A.Welthngn
Info Copy: WM. A. WILTBERGER
Chief, Intelligence Section Major, USAF
CONFIRENTIAN
4-18

FRAME 019 / 025POOR LEGIBILITY — PENDING RE-EXAMINATION

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FRAME 020 / 025paddle-gpu-200dpi

15. Direction of flignt of object(s) Bast
14 "ime in sight 12-15 min.
15. Sreed High rate
10. sound d and dor
-7. Trail

FRAME 021 / 025paddle-gpu-200dpi

CONSEE
.
.

FRAME 022 / 025paddle-gpu-200dpi

yringa
1000 houra (wsr), 6 Auwil 1049, ahsa Hr
zate of ayged C rrtuted that the objegt travelod int a duo eoat directicn
1irsealy owes airporke gaiwdng altitudo as it waat, Br, WgAurthor stated

FRAME 023 / 025paddle-gpu-200dpi

T
qortly
Bo Mo 1 office
nit.
1 Inel JeRCns M. BRAUy
Loting Diatriot Conander
(in dup)
UNCLASSIFIED .
28
*

FRAME 024 / 025paddle-gpu-200dpi

the same time - Y
- .- .
trouble aircraft at 2235R
to high "Charlie" chennel-
of Very Hi equipment.
WILLIAM J. OLSEN
ATE 1st Lt., USAF
Intelligence icer
DOD DIR 5200.10
UNCLASSIFIED
ASPAMENTTA

FRAME 025 / 025paddle-gpu-200dpi

form as an information thia offioe. If after reviawing our
completed form ila, it is atill desired to 7 comoila your speoial
form, plaase
1-Inol: w/a TM. A. WILTBERGAR
Major, USAF
ar d